Spindles for textile spinning and like machines



Nov. 27, 1962 A. WESTALL ETAL 3,065,593

SPINDLES FOR TEXTILE SPINNING AND LIKE MACHINES Filed Dec. 6, 1960 4 ilA M '7 mil! llllg *5 15 15.9 .5 i

1-1. 0 WIN, 1 IT 1 I v I -10] Ann? wz mu. $7 fllmv mi United StatesPatent AND LIKE With the object of providing an improved form ofmounting for the spindles of textile spinning and like machines, whichwill be particularly suited for eflicient operation when subjected toexternal vibrations either transmitted through the frame of the machineor resulting from an unbalanced package, the present invention proposesthat the spindle blade shall be mounted in a tubular insert sleevecontaining a footstep bearing for the base of the blade and supported atan intermediate point (conveniently approximately at the height of thedriving wharve) by a journal bearing which is rigidly held in an outersleeve which is mounted in the bolster with limited spring-controlledlateral freedom therein.

The insert sleeve is suspended resiliently at its upper extremity insaid outer sleeve, so as to be capable of oscillating within thebolster, and means for damping such oscillating movement areincorporated in the latter in the region of the footstep bearing.

Said damping means may take the form of a plurality of co-axial bushesarranged one Within the other and resting upon a flange projectingoutwardly from the footstep bearing, clearance being provided betweenthe inner bush and the lower end of the insert sleeve, and between thebushes, and between the outer bush and the bore of the bolster, toaccommodate damping fluid, e.g. lubricating oil, by which the lateralmovements of the parts are restrained. The lower extremities of thedamping bushes may be fashioned with inwardly turned lips to prevent anyten dency of the bushes to ride up the insert sleeve under operatingconditions. If desired, where additional damping means are required, oneor more supplementary bushes are provided, surrounding the bushes whichare supported by the flange of the footstep bearing, but arranged torest upon the bottom of the bolster, thereby reducing still further theoil-filled spaces between the inner damping bushes and the bolster andfootstep bearing and so increasing the resistance to lateral movement ofthe footstep within the bolster without appreciably detracting from thedesired result of preventing the transmission of machine vibrations tothe spindle.

The nature of the invention will be more clearly understood from thefollowing description of two embodiments of the invention, referencebeing made to the accompanying drawings. In said drawings, FIG. 1 is avertical section of a textile spindle mounting, FIG. 2 is a section onthe line 11-11 of FIG. 1 drawn to a larger scale, and FIG. 3 is afragmentary sectional view depicting a modification of the base of themounting.

Referring now to FIGS. 1 and 2, it will be seen that the spindlemounting incorporates the customary bolster 10, which is adapted to besecuredin a spindle rail or holder (not shown) in conventional manner.The spindle blade 11 is rotatably supported within the bolster It bymeans of a tubular insert sleeve 12, which contains at its lowerextremity a footstep bearing 13 for the base of the blade 11. At a pointapproximately at the height of the driving wharve 1-11 is a journalbearing 14 which is rigidly held in an outer sleeve 15.

Said outer sleeve 15 is provided with a spigot 151 which is receivedwithin the upper part of the bore of the bolster 10, and a tubularcontrolling spring is fitted between the opposing cylindrical surfacesof the spigot 151 and the bolster 10. Said tubular-spring 16 is ofpolygonal section,

and it is split longitudinally at 161 along one of its facets.

The function of this spring is to cushion the head of the spindleagainst vibration under heavy loading conditions.

At its upper end the said outer sleeve 15 has an inwardly turned flange152 which encloses a shoulder 171 on a cap member 17, the lower end ofwhich abuts against the roller bearing journal 14 which is located inthe bore of the said outer sleeve 15, and the arrangement is such thatthe bearing 14 is afforded a rigid support in the latter. A flange 121on the insert sleeve 12 beneath the bearing 14 is suspended between tworubber or like resilient annulae 18, 18 which are gripped between theunderside of the bearing 14 and an inwardly projecting shoulder 153 ofthe outer sleeve 15.

The base of the bolster 10 contains the customary lubricant sump 101.Above the level of the sump the footstep bearing 13 carries awasher-like member 131 which forms a flange upon which the dampingbushes 19, 20 rest by gravity. Said bushes 19, 20 are thereby maintainedout of contact with foreign matter which may drain out of the lubricantinto the lower part of the sump 101, and it is possible thus to ensurethat polluted oil is not circulated between the said bushes for dampingpurposes. The absence of direct contact between the bolster Ill and thedamping bushes 19, 20 prevents transmission of vibrations from the frameof the machine to the spindle.

The outer bush 20 has a relatively large clearance between itself andthe bore of the bolster 10, to ensure that, under light loadingconditions, the spindle blade 11 is free to assume a central axialposition with the least resistance from the damping surfaces of saidbushes 19, 20. The inner bush 19 has smaller clearances between itssurfaces and those of the insert sleeve 12 and the outer bush 20, toprovide effective damping of undesirable vibrations under heavierloading conditions.

As will be seen from FIGS. 1 and 3, the bushes 19, 20 are provided attheir lower extremities with inwardly turned lips, the function ofwhich, as previously discussed, is to prevent said bushes from riding upthe sleeve 12 in operating conditions.

The modification shown in FIG. 3 includes two supplementary dampingbushes 21, 22, arranged co-axially about the damping bush 20 in thespace between the latter and the bore of the bolster. The bushes 21, 22are flanged at their lower ends, so that the bush 22 rests by its flange221 on the base of the bolster, in a manner which permits oil to passbeneath it and thus maintain circulation of the oil to the bore of thefootstep bearing through ports provided in the wall thereof. The bush 21rests by its flange 211 upon the inner face of the flange 221 of thebush 22. The presence of the said supplementary bushes 21, 22 reducesthe amount of free space enclosed within the outer .bush 20, restrictingthe degree of clearance between the bushes and so affording greaterdamping capacity in each space.

What we claim as our invention and desire to secure by Letters Patentis:

1. A spindle for a textile spinning and like machine, comprising aspindle mounting bolster having an open end and a base, said baseincluding a sump, a tubular insert sleeve enclosed within said bolster,the length of said insert sleeve being laterally spaced from the innerwall of said bolster, the inner end of said insert sleeve being spacedfrom the base of said bolster, an outer sleeve mounted in said bolster,resilient means mounting said outer sleeve for limited controlledlateral freedom relative to said bolster, resilient means intermediatesaid insert sleeve and said outer sleeve and mounting said insert sleevefor oscillating movement within said bolster, a journal bearing rigidlysupported by said outer sleeve, a spindle blade mounted in said tubularinsert sleeve and having a base extending adjacent the inner endof saidinsert sleeve, said spindle blade being supported for rotationalmovement about its longitudinal axis by said journal bearingintermediate the ends of said spindle blade, a footstep bearing mountedby said insert sleeve atthe inner end thereof'for' oscillating movementtherewith and in bearing engagement with said b'aseof said'spindle," aflange carried by said footstep bearing, and a plurality of dampingbushes having inwardly turned lips on their oneends, said bushes beingsupported on said flange adjacent their said one ends 'in coaxial spacedrelation relative to one another and relative to said insert sleeve.

2. A spindle as claimed in claim 1, wherein the outer sleeve isspigottedin' the open end of the bolster, the space between the opposingcylindrical surfaces of the sleeve spigotand the bolster containing atubular spring of polygonal section and longitudinally divided along oneof its facets.

3. A spindle mounting as claimed in claim 1, wherein the insert sleeveis suspended by a flange on its upper extremity, which flange is locatedbetween resilient annulae which are gripped together between opposingfaces of the outer sleeve and of the journal bearing.

4. A spindle as claimed in claim 1 wherein there are providedsupplementary damping bushes arranged coaxially about said dampingbushes on said flange, said supplementary damping bushes being flangedat their inner ends, the outermost supplementary bush resting on itssaid flange on said base of said bolster, the innermost supplementarybush resting on its. said flange on the inner face of the flange of thenext adjacent outer supplementary bush.

References Cited in the file of this-patent FOREIGN PATENTS 460,606Canada Oct. 25, 1949 714,013 France Aug. 24, 1931 621,288 Great BritainApr. 7, 1949

